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lcr/callpbx.cpp

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/*****************************************************************************\
** **
** PBX4Linux **
** **
**---------------------------------------------------------------------------**
** Copyright: Andreas Eversberg **
** **
** call functions **
** **
\*****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <poll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "main.h"
#define __u8 unsigned char
#define __u16 unsigned short
#define __u32 unsigned long
#include "linux/isdnif.h"
/* notify endpoint about state change (if any) */
static int notify_state_change(int call_id, int epoint_id, int old_state, int new_state)
{
int notify_off = 0, notify_on = 0;
struct message *message;
if (old_state == new_state)
return(old_state);
switch(old_state)
{
case NOTIFY_STATE_ACTIVE:
switch(new_state)
{
case NOTIFY_STATE_HOLD:
notify_on = INFO_NOTIFY_REMOTE_HOLD;
break;
case NOTIFY_STATE_SUSPEND:
notify_on = INFO_NOTIFY_USER_SUSPENDED;
break;
case NOTIFY_STATE_CONFERENCE:
notify_on = INFO_NOTIFY_CONFERENCE_ESTABLISHED;
break;
}
break;
case NOTIFY_STATE_HOLD:
switch(new_state)
{
case NOTIFY_STATE_ACTIVE:
notify_off = INFO_NOTIFY_REMOTE_RETRIEVAL;
break;
case NOTIFY_STATE_SUSPEND:
notify_off = INFO_NOTIFY_REMOTE_RETRIEVAL;
notify_on = INFO_NOTIFY_USER_SUSPENDED;
break;
case NOTIFY_STATE_CONFERENCE:
notify_off = INFO_NOTIFY_REMOTE_RETRIEVAL;
notify_on = INFO_NOTIFY_CONFERENCE_ESTABLISHED;
break;
}
break;
case NOTIFY_STATE_SUSPEND:
switch(new_state)
{
case NOTIFY_STATE_ACTIVE:
notify_off = INFO_NOTIFY_USER_RESUMED;
break;
case NOTIFY_STATE_HOLD:
notify_off = INFO_NOTIFY_USER_RESUMED;
notify_on = INFO_NOTIFY_REMOTE_HOLD;
break;
case NOTIFY_STATE_CONFERENCE:
notify_off = INFO_NOTIFY_USER_RESUMED;
notify_on = INFO_NOTIFY_CONFERENCE_ESTABLISHED;
break;
}
break;
case NOTIFY_STATE_CONFERENCE:
switch(new_state)
{
case NOTIFY_STATE_ACTIVE:
notify_off = INFO_NOTIFY_CONFERENCE_DISCONNECTED;
break;
case NOTIFY_STATE_HOLD:
notify_off = INFO_NOTIFY_CONFERENCE_DISCONNECTED;
notify_on = INFO_NOTIFY_REMOTE_HOLD;
break;
case NOTIFY_STATE_SUSPEND:
notify_off = INFO_NOTIFY_CONFERENCE_DISCONNECTED;
notify_on = INFO_NOTIFY_USER_SUSPENDED;
break;
}
break;
}
if (call_id && notify_off)
{
message = message_create(call_id, epoint_id, CALL_TO_EPOINT, MESSAGE_NOTIFY);
message->param.notifyinfo.notify = notify_off;
message_put(message);
}
if (call_id && notify_on)
{
message = message_create(call_id, epoint_id, CALL_TO_EPOINT, MESSAGE_NOTIFY);
message->param.notifyinfo.notify = notify_on;
message_put(message);
}
return(new_state);
}
/* debug function for call */
void callpbx_debug(class CallPBX *callpbx, char *function)
{
struct call_relation *relation;
struct port_list *portlist;
class Endpoint *epoint;
class Port *port;
char buffer[512];
if (!(options.deb & DEBUG_CALL))
return;
PDEBUG(DEBUG_CALL, "CALL(%d) start (called from %s)\n", callpbx->c_serial, function);
relation = callpbx->c_relation;
if (!relation)
PDEBUG(DEBUG_CALL, "call has no relations\n");
while(relation)
{
epoint = find_epoint_id(relation->epoint_id);
if (!epoint)
{
PDEBUG(DEBUG_CALL, "warning: relations epoint id=%ld doesn't exists!\n", relation->epoint_id);
relation = relation->next;
continue;
}
buffer[0] = '\0';
UPRINT(strchr(buffer,0), "*** ep%ld", relation->epoint_id);
UPRINT(strchr(buffer,0), " ifs=");
portlist = epoint->ep_portlist;
while(portlist)
{
port = find_port_id(portlist->port_id);
if (port)
UPRINT(strchr(buffer,0), "%s,", port->p_name);
else
UPRINT(strchr(buffer,0), "<port %ld doesn't exist>,", portlist->port_id);
portlist = portlist->next;
}
// UPRINT(strchr(buffer,0), " endpoint=%d on=%s hold=%s", epoint->ep_serial, (epoint->ep_call_id==callpbx->c_serial)?"yes":"no", (epoint->get_hold_id()==callpbx->c_serial)?"yes":"no");
UPRINT(strchr(buffer,0), " endpoint=%d on=%s", epoint->ep_serial, (epoint->ep_call_id==callpbx->c_serial)?"yes":"no");
switch(relation->type)
{
case RELATION_TYPE_CALLING:
UPRINT(strchr(buffer,0), " type=CALLING");
break;
case RELATION_TYPE_SETUP:
UPRINT(strchr(buffer,0), " type=SETUP");
break;
case RELATION_TYPE_CONNECT:
UPRINT(strchr(buffer,0), " type=CONNECT");
break;
default:
UPRINT(strchr(buffer,0), " type=unknown");
break;
}
switch(relation->channel_state)
{
case CHANNEL_STATE_CONNECT:
UPRINT(strchr(buffer,0), " channel=CONNECT");
break;
case CHANNEL_STATE_HOLD:
UPRINT(strchr(buffer,0), " channel=HOLD");
break;
default:
UPRINT(strchr(buffer,0), " channel=unknown");
break;
}
switch(relation->tx_state)
{
case NOTIFY_STATE_ACTIVE:
UPRINT(strchr(buffer,0), " tx_state=ACTIVE");
break;
case NOTIFY_STATE_HOLD:
UPRINT(strchr(buffer,0), " tx_state=HOLD");
break;
case NOTIFY_STATE_SUSPEND:
UPRINT(strchr(buffer,0), " tx_state=SUSPEND");
break;
case NOTIFY_STATE_CONFERENCE:
UPRINT(strchr(buffer,0), " tx_state=CONFERENCE");
break;
default:
UPRINT(strchr(buffer,0), " tx_state=unknown");
break;
}
switch(relation->rx_state)
{
case NOTIFY_STATE_ACTIVE:
UPRINT(strchr(buffer,0), " rx_state=ACTIVE");
break;
case NOTIFY_STATE_HOLD:
UPRINT(strchr(buffer,0), " rx_state=HOLD");
break;
case NOTIFY_STATE_SUSPEND:
UPRINT(strchr(buffer,0), " rx_state=SUSPEND");
break;
case NOTIFY_STATE_CONFERENCE:
UPRINT(strchr(buffer,0), " rx_state=CONFERENCE");
break;
default:
UPRINT(strchr(buffer,0), " rx_state=unknown");
break;
}
PDEBUG(DEBUG_CALL, "%s\n", buffer);
relation = relation->next;
}
PDEBUG(DEBUG_CALL, "end\n");
}
/*
* constructor for a new call
* the call will have a relation to the calling endpoint
*/
CallPBX::CallPBX(class Endpoint *epoint) : Call(epoint)
{
struct call_relation *relation;
// char filename[256];
if (!epoint)
{
PERROR("software error, epoint is NULL.\n");
exit(-1);
}
PDEBUG(DEBUG_CALL, "creating new call and connecting it to the endpoint.\n");
c_type = CALL_TYPE_PBX;
c_caller[0] = '\0';
c_caller_id[0] = '\0';
c_dialed[0] = '\0';
c_todial[0] = '\0';
c_pid = getpid();
c_updatebridge = 0;
c_partyline = 0;
/* initialize a relation only to the calling interface */
relation = c_relation = (struct call_relation *)calloc(1, sizeof(struct call_relation));
if (!relation)
{
PERROR("no memory, exitting..\n");
exit(-1);
}
cmemuse++;
memset(relation, 0, sizeof(struct call_relation));
relation->type = RELATION_TYPE_CALLING;
relation->channel_state = CHANNEL_STATE_HOLD; /* audio is assumed on a new call */
relation->tx_state = NOTIFY_STATE_ACTIVE; /* new calls always assumed to be active */
relation->rx_state = NOTIFY_STATE_ACTIVE; /* new calls always assumed to be active */
relation->epoint_id = epoint->ep_serial;
if (options.deb & DEBUG_CALL)
callpbx_debug(this, "CallPBX::Constructor(new call)");
}
/*
* call descructor
*/
CallPBX::~CallPBX()
{
struct call_relation *relation, *rtemp;
relation = c_relation;
while(relation)
{
rtemp = relation->next;
memset(relation, 0, sizeof(struct call_relation));
free(relation);
cmemuse--;
relation = rtemp;
}
}
/* bridge sets the audio flow of all bchannels assiociated to 'this' call
* also it changes and notifies active/hold/conference states
*/
void CallPBX::bridge(void)
{
struct call_relation *relation;
struct message *message;
int numconnect = 0, relations = 0;
class Endpoint *epoint;
struct port_list *portlist;
class Port *port;
int allmISDN = 0; // relations that are no mISDN
relation = c_relation;
while(relation)
{
/* count all relations */
relations++;
/* check for relation's objects */
epoint = find_epoint_id(relation->epoint_id);
if (!epoint)
{
PERROR("software error: relation without existing endpoints.\n");
relation = relation->next;
continue;
}
portlist = epoint->ep_portlist;
if (!portlist)
{
PDEBUG((DEBUG_CALL|DEBUG_PORT), "ignoring relation without port object.\n");
//#warning testing: keep on hold until single audio stream available
relation->channel_state = CHANNEL_STATE_HOLD;
relation = relation->next;
continue;
}
if (portlist->next)
{
PDEBUG((DEBUG_CALL|DEBUG_PORT), "ignoring relation with ep%d due to port_list.\n", epoint->ep_serial);
//#warning testing: keep on hold until single audio stream available
relation->channel_state = CHANNEL_STATE_HOLD;
relation = relation->next;
continue;
}
port = find_port_id(portlist->port_id);
if (!port)
{
PDEBUG((DEBUG_CALL|DEBUG_PORT), "ignoring relation without existing port object.\n");
relation = relation->next;
continue;
}
if ((port->p_type&PORT_CLASS_MASK)!=PORT_CLASS_mISDN)
{
PDEBUG((DEBUG_CALL|DEBUG_PORT), "ignoring relation ep%d because it's port is not mISDN.\n", epoint->ep_serial);
if (allmISDN)
{
PDEBUG((DEBUG_CALL|DEBUG_PORT), "not all endpoints are mISDN.\n");
allmISDN = 0;
}
relation = relation->next;
continue;
}
relation = relation->next;
}
/* we notify all relations about rxdata. */
relation = c_relation;
while(relation)
{
/* count connected relations */
if ((relation->channel_state == CHANNEL_STATE_CONNECT)
&& (relation->rx_state != NOTIFY_STATE_SUSPEND)
&& (relation->rx_state != NOTIFY_STATE_HOLD))
numconnect ++;
/* remove unconnected parties from conference, also remove remotely disconnected parties so conference will not be disturbed. */
if (relation->channel_state == CHANNEL_STATE_CONNECT
&& relation->rx_state != NOTIFY_STATE_HOLD
&& relation->rx_state != NOTIFY_STATE_SUSPEND
&& relations>1 // no conf with on party
&& allmISDN) // no conf if any member is not mISDN
{
message = message_create(c_serial, relation->epoint_id, CALL_TO_EPOINT, MESSAGE_mISDNSIGNAL);
message->param.mISDNsignal.message = mISDNSIGNAL_CONF;
message->param.mISDNsignal.conf = c_serial<<16 | c_pid;
PDEBUG(DEBUG_CALL, "%s +on+ id: 0x%08x\n", port->p_name, message->param.mISDNsignal.conf);
message_put(message);
} else
{
message = message_create(c_serial, relation->epoint_id, CALL_TO_EPOINT, MESSAGE_mISDNSIGNAL);
message->param.mISDNsignal.message = mISDNSIGNAL_CONF;
message->param.mISDNsignal.conf = 0;
PDEBUG(DEBUG_CALL, "%s +off+ id: 0x%08x\n", port->p_name, message->param.mISDNsignal.conf);
message_put(message);
}
/*
* request data from endpoint/port if:
* - two relations
* - any without mISDN
* in this case we bridge
*/
message = message_create(c_serial, relation->epoint_id, CALL_TO_EPOINT, MESSAGE_mISDNSIGNAL);
message->param.mISDNsignal.message = mISDNSIGNAL_CALLDATA;
message->param.mISDNsignal.calldata = (relnum==2 && !allmISDN);
PDEBUG(DEBUG_CALL, "call %d sets 'calldata' on port %s to %d\n", c_serial, port->p_name, calldata);
message_put(message);
relation = relation->next;
}
/* two people just exchange their states */
if (relations==2 && !c_partyline)
{
relation = c_relation;
relation->tx_state = notify_state_change(c_serial, relation->epoint_id, relation->tx_state, relation->next->rx_state);
relation->next->tx_state = notify_state_change(c_serial, relation->next->epoint_id, relation->next->tx_state, relation->rx_state);
} else
/* one member in a call, so we put her on hold */
if (relations==1 || numconnect==1)
{
relation = c_relation;
while(relation)
{
if ((relation->channel_state == CHANNEL_STATE_CONNECT)
&& (relation->rx_state != NOTIFY_STATE_SUSPEND)
&& (relation->rx_state != NOTIFY_STATE_HOLD))
relation->tx_state = notify_state_change(c_serial, relation->epoint_id, relation->tx_state, NOTIFY_STATE_HOLD);
relation = relation->next;
}
} else
/* if conference/partyline or (more than two members and more than one is connected), so we set conference state */
{
relation = c_relation;
while(relation)
{
if ((relation->channel_state == CHANNEL_STATE_CONNECT)
&& (relation->rx_state != NOTIFY_STATE_SUSPEND)
&& (relation->rx_state != NOTIFY_STATE_HOLD))
relation->tx_state = notify_state_change(c_serial, relation->epoint_id, relation->tx_state, NOTIFY_STATE_CONFERENCE);
relation = relation->next;
}
}
}
/*
* bridging is only possible with two connected endpoints
*/
void CallPBX::bridge_data(unsigned long epoint_from, struct call_relation *relation_from, union parameter *param)
{
struct call_relation *relation_to;
struct message *message;
/* if we are alone */
if (!c_relation->next)
return;
/* if we are more than two */
if (c_relation->next->next)
return;
/* skip if source endpoint has NOT audio mode CONNECT */
if (relation_from->channel_state != CHANNEL_STATE_CONNECT)
return;
/* get destination relation */
relation_to = c_relation;
if (relation_to == relation_from)
{
/* oops, we are the first, so destination is: */
relation_to = relation_to->next;
}
/* skip if destomatopm endpoint has NOT audio mode CONNECT */
if (relation_to->channel_state != CHANNEL_STATE_CONNECT)
return;
/* now we may send our data to the endpoint where it
* will be delivered to the port
*/
//PDEBUG(DEBUG_CALL, "mixing from %d to %d\n", epoint_from, relation_to->epoint_id);
message = message_create(c_serial, relation_to->epoint_id, CALL_TO_EPOINT, MESSAGE_DATA);
memcpy(&message->param, param, sizeof(union parameter));
message_put(message);
}
/* release call from endpoint
* if the call has two relations, all relations are freed and the call will be
* destroyed
*/
void CallPBX::release(unsigned long epoint_id, int hold, int location, int cause)
{
struct call_relation *relation, **relationpointer;
struct message *message;
class Call *call;
if (!epoint_id)
{
PERROR("software error, epoint is NULL.\n");
return;
}
if (options.deb & DEBUG_CALL)
callpbx_debug(this, "call_release{before}");
/* find relation */
relation = c_relation;
while(relation)
{
if (relation->epoint_id == epoint_id)
break;
relation = relation->next;
}
if (!relation)
{
PERROR("software error, epoint has a call with no relation to the epoint.\n");
return;
}
/* remove from bridge */
if (relation->channel_state != CHANNEL_STATE_HOLD)
{
relation->channel_state = CHANNEL_STATE_HOLD;
c_updatebridge = 1; /* update bridge flag */
}
/* detach given interface */
relation = c_relation;
relationpointer = &c_relation;
while(relation)
{
/* endpoint of function call */
if (relation->epoint_id == epoint_id)
{
*relationpointer = relation->next;
memset(relation, 0, sizeof(struct call_relation));
free(relation);
cmemuse--;
relation = *relationpointer;
continue;
}
relationpointer = &relation->next;
relation = relation->next;
}
/* if no more relation */
if (!c_relation)
{
PDEBUG(DEBUG_CALL, "call is completely removed.\n");
/* there is no more endpoint related to the call */
delete this;
// end of call object!
PDEBUG(DEBUG_CALL, "call completely removed!\n");
} else
/* if call is a party line */
if (c_partyline)
{
PDEBUG(DEBUG_CALL, "call is a conference room, so we keep it alive until the last party left.\n");
} else
/* if only one relation left */
if (!c_relation->next)
{
PDEBUG(DEBUG_CALL, "call has one relation left, so we send it a release with the given cause %d.\n", cause);
message = message_create(c_serial, c_relation->epoint_id, CALL_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = cause;
message->param.disconnectinfo.location = location;
message_put(message);
delete this;
// end of call object!
PDEBUG(DEBUG_CALL, "call completely removed!\n");
}
call = call_first;
while(call)
{
if (options.deb & DEBUG_CALL && call->c_type==CALL_TYPE_PBX)
callpbx_debug((class CallPBX *)call, "call_release{all calls left}");
call = call->next;
}
PDEBUG(DEBUG_CALL, "call_release(): ended.\n");
}
/* count number of relations in a call
*/
int callpbx_countrelations(unsigned long call_id)
{
struct call_relation *relation;
int i;
class Call *call;
class CallPBX *callpbx;
call = find_call_id(call_id);
if (!call)
return(0);
if (call->c_type != CALL_TYPE_PBX)
return(0);
callpbx = (class CallPBX *)call;
i = 0;
relation = callpbx->c_relation;
while(relation)
{
i++;
relation = relation->next;
}
return(i);
}
void CallPBX::remove_relation(struct call_relation *relation)
{
struct call_relation *temp, **tempp;
if (!relation)
return;
temp = c_relation;
tempp = &c_relation;
while(temp)
{
if (temp == relation)
break;
tempp = &temp->next;
temp = temp->next;
}
if (!temp)
{
PERROR("relation not in call.\n");
return;
}
PDEBUG(DEBUG_CALL, "removing relation.\n");
*tempp = relation->next;
memset(temp, 0, sizeof(struct call_relation));
free(temp);
cmemuse--;
}
struct call_relation *CallPBX::add_relation(void)
{
struct call_relation *relation;
if (!c_relation)
{
PERROR("there is no first relation to this call\n");
return(NULL);
}
relation = c_relation;
while(relation->next)
relation = relation->next;
relation->next = (struct call_relation *)calloc(1, sizeof(struct call_relation));
if (!relation->next)
{
PERROR("no memory\n");
return(NULL);
}
cmemuse++;
memset(relation->next, 0, sizeof(struct call_relation));
/* the record pointer is set at the first time the data is received for the relation */
// if (options.deb & DEBUG_CALL)
// callpbx_debug(call, "add_relation");
return(relation->next);
}
/* epoint sends a message to a call
*
*/
void CallPBX::message_epoint(unsigned long epoint_id, int message_type, union parameter *param)
{
class Call *cl;
struct call_relation *relation, *rel;
int num;
int new_state;
struct message *message;
// int size, writesize, oldpointer;
class Endpoint *epoint;
char *number;
if (!epoint_id)
{
PERROR("software error, epoint == NULL\n");
return;
}
// if (options.deb & DEBUG_CALL)
// {
// PDEBUG(DEBUG_CALL, "message %d received from ep%d.\n", message, epoint->ep_serial);
// callpbx_debug(call,"Call::message_epoint");
// }
if (options.deb & DEBUG_CALL)
{
if (message_type != MESSAGE_DATA)
{
cl = call_first;
while(cl)
{
if (cl->c_type == CALL_TYPE_PBX)
callpbx_debug((class CallPBX *)cl, "Call::message_epoint{all calls before processing}");
cl = cl->next;
}
}
}
/* check relation */
relation = c_relation;
while(relation)
{
if (relation->epoint_id == epoint_id)
break;
relation = relation->next;
}
if (!relation)
{
// PERROR("no relation back to the endpoint found, ignoring (call=%d, endpoint=%d\n", c_serial, epoint_id);
return;
}
switch(message_type)
{
/* process channel message */
case MESSAGE_CHANNEL:
PDEBUG(DEBUG_CALL, "call received channel message: %d.\n", param->channel);
if (relation->channel_state != param->channel)
{
relation->channel_state = param->channel;
c_updatebridge = 1; /* update bridge flag */
if (options.deb & DEBUG_CALL)
callpbx_debug(this, "Call::message_epoint{after setting new channel state}");
}
return;
/* track notify */
case MESSAGE_NOTIFY:
switch(param->notifyinfo.notify)
{
case INFO_NOTIFY_USER_SUSPENDED:
case INFO_NOTIFY_USER_RESUMED:
case INFO_NOTIFY_REMOTE_HOLD:
case INFO_NOTIFY_REMOTE_RETRIEVAL:
case INFO_NOTIFY_CONFERENCE_ESTABLISHED:
case INFO_NOTIFY_CONFERENCE_DISCONNECTED:
new_state = track_notify(relation->rx_state, param->notifyinfo.notify);
if (new_state != relation->rx_state)
{
relation->rx_state = new_state;
c_updatebridge = 1;
if (options.deb & DEBUG_CALL)
callpbx_debug(this, "Call::message_epoint{after setting new rx state}");
}
break;
default:
/* send notification to all other endpoints */
rel = c_relation;
while(rel)
{
if (rel->epoint_id!=epoint_id && rel->epoint_id)
{
message = message_create(c_serial, rel->epoint_id, CALL_TO_EPOINT, MESSAGE_NOTIFY);
memcpy(&message->param, param, sizeof(union parameter));
message_put(message);
}
rel = rel->next;
}
}
return;
/* audio data */
case MESSAGE_DATA:
/* now send audio data to the other endpoint */
bridge_data(epoint_id, relation, param);
return;
}
/* process party line */
if (message_type == MESSAGE_SETUP) if (param->setup.partyline)
{
PDEBUG(DEBUG_CALL, "respsone with connect in partyline mode.\n");
c_partyline = param->setup.partyline;
message = message_create(c_serial, epoint_id, CALL_TO_EPOINT, MESSAGE_CONNECT);
message->param.setup.partyline = c_partyline;
message_put(message);
c_updatebridge = 1; /* update bridge flag */
}
if (c_partyline)
{
if (message_type == MESSAGE_DISCONNECT)
{
PDEBUG(DEBUG_CALL, "releasing after receiving disconnect, because call in partyline mode.\n");
// remove_relation(relation);
message = message_create(c_serial, epoint_id, CALL_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = CAUSE_NORMAL;
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
// c_updatebridge = 1; /* update bridge flag */
return;
}
}
if (c_partyline)
{
PDEBUG(DEBUG_CALL, "ignoring message, because call in partyline mode.\n");
return;
}
/* count relations */
num=callpbx_countrelations(c_serial);
/* check number of relations */
if (num > 2)
{
PDEBUG(DEBUG_CALL, "call has more than two relations so there is no need to send a message.\n");
return;
}
/* find interfaces not related to calling epoint */
relation = c_relation;
while(relation)
{
if (relation->epoint_id != epoint_id)
break;
relation = relation->next;
}
if (!relation)
{
switch(message_type)
{
case MESSAGE_SETUP:
if (param->dialinginfo.itype == INFO_ITYPE_ISDN_EXTENSION)
{
while(number = strsep(&param->dialinginfo.number, ','))
{
if (out_setup(epoint_id, message_type, param, number))
return; // call destroyed
}
break;
}
if (out_setup(epoint_id, message_type, param, NULL))
return; // call destroyed
break;
default:
PDEBUG(DEBUG_CALL, "no need to send a message because there is no other endpoint than the calling one.\n");
}
} else
{
PDEBUG(DEBUG_CALL, "sending message ep%ld -> ep%ld.\n", epoint_id, relation->epoint_id);
message = message_create(c_serial, relation->epoint_id, CALL_TO_EPOINT, message_type);
memcpy(&message->param, param, sizeof(union parameter));
message_put(message);
PDEBUG(DEBUG_CALL, "message sent.\n");
}
}
/* call process is called from the main loop
* it processes the current calling state.
* returns 0 if call nothing was done
*/
int CallPBX::handler(void)
{
// struct call_relation *relation;
// char dialing[32][32];
// int port[32];
// int found;
// int i, j;
// char *p;
/* the bridge must be updated */
if (c_updatebridge)
{
bridge();
c_updatebridge = 0;
return(1);
}
return(0);
}
int track_notify(int oldstate, int notify)
{
int newstate = oldstate;
switch(notify)
{
case INFO_NOTIFY_USER_RESUMED:
case INFO_NOTIFY_REMOTE_RETRIEVAL:
case INFO_NOTIFY_CONFERENCE_DISCONNECTED:
case INFO_NOTIFY_RESERVED_CT_1:
case INFO_NOTIFY_RESERVED_CT_2:
case INFO_NOTIFY_CALL_IS_DIVERTING:
newstate = NOTIFY_STATE_ACTIVE;
break;
case INFO_NOTIFY_USER_SUSPENDED:
newstate = NOTIFY_STATE_SUSPEND;
break;
case INFO_NOTIFY_REMOTE_HOLD:
newstate = NOTIFY_STATE_HOLD;
break;
case INFO_NOTIFY_CONFERENCE_ESTABLISHED:
newstate = NOTIFY_STATE_CONFERENCE;
break;
}
return(newstate);
}
/*
* setup to exactly one endpoint
* if it fails, the calling endpoint is released.
* if other outgoing endpoints already exists, they are release as well.
* note: if this functions fails, it will destroy its own call object!
*/
int CallPBX::out_setup(unsigned long epoint_id, int message_type, union parameter *param, char *newnumber)
{
struct call_relation *relation;
struct message *message;
class Endpoint *epoint;
PDEBUG(DEBUG_CALL, "no endpoint found, so we will create an endpoint and send the setup message we have.\n");
/* create a new relation */
if (!(relation=add_relation()))
{
/* release due to error */
ressource_error:
relation = c_relation;
while(relation)
{
message = message_create(c_serial, releation->epoint_id, CALL_TO_EPOINT, MESSAGE_RELEASE);
message->param.disconnectinfo.cause = (relation->epoint_id==epoint_id)CAUSE_RESSOURCEUNAVAIL?:CAUSE_NORMAL;
message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
message_put(message);
relation = relation->next;
}
delete this;
return(-ENOMEM);
}
relation->type = RELATION_TYPE_SETUP;
relation->channel_state = CHANNEL_STATE_HOLD; /* audio is assumed on a new call */
relation->tx_state = NOTIFY_STATE_ACTIVE; /* new calls always assumed to be active */
relation->rx_state = NOTIFY_STATE_ACTIVE; /* new calls always assumed to be active */
/* create a new endpoint */
epoint = new Endpoint(0, c_serial);
if (!epoint)
{
remove_relation(relation);
goto ressource_error;
}
if (!(epoint->ep_app = new DEFAULT_ENDPOINT_APP(epoint)))
{
PERROR("ERROR:No endpoint's app.\n");
delete epoint;
remove_relation(relation);
goto ressource_error;
}
relation->epoint_id = epoint->ep_serial;
/* send setup message to new endpoint */
//printf("JOLLY DEBUG: %d\n",call_countrelations(c_serial));
//i if (options.deb & DEBUG_CALL)
// callpbx_debug(call, "Call::message_epoint");
message = message_create(c_serial, relation->epoint_id, CALL_TO_EPOINT, message_type);
memcpy(&message->param, param, sizeof(union parameter));
if (newnumber)
SCPY(message->param.setup.dialinginfo.number, newnumber);
PDEBUG(DEBUG_CALL, "setup message sent to ep %d with number='%s'.\n", relation->epoint_id, message->param.setup.dialinginfo.number);
message_put(message);
return(0);
}
todo: beim release von einem relation_type_setup muss der cause gesammelt werden, bis keine weitere setup-relation mehr existiert
beim letzten den collected cause senden
bridge kann ruhig loslegen, das aber dokumentieren
bridge <EFBFBD>berdenken: wer sendet, welche t<EFBFBD>ne verf<EFBFBD>gbar sind, u.s.w
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